Cap of ball-point pen



FIG. 1 is a perspective view of the top, front and right side of a cap of ball-point pen showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof, the left side being a mirror image thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a cap of ball-point pen, as shown and described. 